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Flat dies are used for the extrusion of a wide range of flat products. In general, the main requirement to the die design is to get products with a good mass distribution. It is known that a die can be designed well but its performance may become much worse due to uneven material properties at the die inlet. Such a behavior can be studied by a 3D simulation.
The described study uses a 3D FEM analysis to investigate an effect of an uneven temperature distribution at the die inlet on the final distribution. The temperature inhomogenity is modeled in two ways. At first a temperature profile created by the heat dissipation is used. In the second case, an L-shaped spindle (valve) is used to generate the temperature irregularity. The spindle orientation was horizontal or vertical to the die axis. In all cases, the influence of the temperature inhomogenity on the final distribution at the die outlet was studied.
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A Role Of An Uneven Temperature Distribution At The Flat Die Inlet On The Die Performance, 2004 PLAC